From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eli Cohen Subject: Re: Possible process deadlock in RMPP flow Date: Sun, 27 Sep 2009 10:01:25 +0200 Message-ID: <20090927080125.GB28876@mtls03> References: <20090923150454.GA26150@mtls03> <7A32EEE20DF5432CADB60B8F8B1E0093@amr.corp.intel.com> <20090923172532.GA32223@mtls03> <4ABB13F3.1060702@Voltaire.com> <20090924073601.GA28876@mtls03> <53F5ED0C557B4667B22A27A0459B800B@amr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <53F5ED0C557B4667B22A27A0459B800B-Zpru7NauK7drdx17CPfAsdBPR1lH4CV8@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sean Hefty Cc: Or Gerlitz , Linux RDMA list , ewg-ZwoEplunGu1OwGhvXhtEPSCwEArCW2h5@public.gmane.org, Roland Dreier List-Id: linux-rdma@vger.kernel.org On Thu, Sep 24, 2009 at 08:53:24AM -0700, Sean Hefty wrote: > >Thanks Or. This one is already in OFED 1.4.2 but apparently this is a > >different problem. Once I have information whether the patch Roland > >posted fixed it I will update the list. > > If ibnetdiscover doesn't use RMPP as Hal indicated, I don't think Roland's patch > will help. Right, it doesn't help. Still it appears that ibnetdiscover triggers this problem and the lock seams to appear at ib_cancel_rmpp_recvs() waiting for flush_workqueue() to return. Do you know which apps or ULPs make use of RMPPs? Any other ideas what this could be? -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html